Query Dojo vs SQL Studio Mobile

Walk into your SQL interview ready. Query Dojo is SQL interview practice that fits in a few minutes a day. Drill the classic questions, rehearse under a real interview clock, and see exactly what is wrong when a query fails. PRACTICE THE CLASSIC QUESTIONS 85 interview-style SQL challenges, from finding the runner-up salary to top earners per department, monthly retention, login streaks, running totals and medians. Every query runs on a real database, right on your phone. REHEARSE UNDER A REAL CLOCK Timed mock interviews: 25 minutes, 4 questions, no hints. Finish with a readiness score out of 100, so you know where you stand before the real thing. SEE EXACTLY WHY AN ANSWER IS WRONG Every run is checked against the expected result. When it is off, you see what is missing or extra, from columns to rows. Hints and full solutions are there when you are stuck. BUILD QUERIES WITHOUT A KEYBOARD Tap tiles to build real queries, put lines in the right order, or type from scratch. RELEARN WHAT YOU FORGOT 79 bite-size lessons, from SELECT and JOINs to window functions, CTEs, gaps and islands, and finding the median. A PLAN FOR YOUR LEVEL Tell us where you are and get a 4-week belt plan with the topics to focus on first. EARN YOUR BLACK BELT Every challenge and lesson moves you up, from white belt to black belt and beyond, with streaks to keep you consistent. A PLAYGROUND FOR EVERYTHING ELSE Run any SQL against 4 sample databases. Every run is rolled back, so experiment freely. Query Dojo Premium is an auto-renewing subscription, billed monthly or yearly. Payment is charged to your Apple ID at confirmation. It renews automatically unless canceled at least 24 hours before the end of the current period, and you can manage or cancel it in your App Store account settings. Terms: https://querydojo.pages.dev/terms Privacy: https://querydojo.pages.dev/privacy

SQL Studio Mobile is the ultimate mobile companion for learning and practicing Database concepts. Powered by a robust offline SQLite engine, it transforms your device into a private, secure database playground where your data never leaves your phone. Key Features: Interactive Visualization: Automatically generate Entity-Relationship Diagrams (ERD) to understand table relationships at a glance. Structured Learning: Includes 10 built-in practice levels ranging from basic SELECT queries to complex JOIN operations, perfect for CS students and beginners. Professional Tools: Features syntax highlighting, error detection, and a clean interface optimized for mobile typing. Multi-Language: Fully localized support for English, Traditional Chinese, and Simplified Chinese. Whether you are a student revising for the Computer Science, a developer prototyping a schema, or a hobbyist learning data skills, SQL Studio Mobile provides the environment you need. The free version offers unlimited query execution and database creation. Upgrade to Premium via In-App Purchase to remove ads and unlock Project Import/Export, allowing you to share your databases or backup your progress seamlessly.